Tetrazine-Ligated CRISPR sgRNAs for Efficient Genome Editing.
Tetrazine-Ligated CRISPR sgRNAs for Efficient Genome Editing.
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DOI:
10.1021/acschembio.2c00116
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发表时间:
2022-05-20
影响因子:
4
通讯作者:
Watts, Jonathan K.
中科院分区:
文献类型:
--
作者:
Chen, Zexiang;Devi, Gitali;Arif, Amena;Zamore, Phillip D.;Sontheimer, Erik J.;Watts, Jonathan K.
CRISPR-Cas technology has revolutionized genome editing. Its broad and fast-growing application in biomedical research and therapeutics has led to increased demand for guide RNAs. The synthesis of chemically modified single-guide RNAs (sgRNAs) containing >100 nucleotides remains a bottleneck. Here we report the development of a tetrazine ligation method for the preparation of sgRNAs. A tetrazine moiety on the 3′-end of the crRNA and a norbornene moiety on the 5′-end of the tracrRNA enable successful ligation between crRNA and tracrRNA to form sgRNA under mild conditions. Tetrazine-ligated sgRNAs allow efficient genome editing of reporter and endogenous loci in human cells. High-efficiency editing requires structural optimization of the linker.
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